<template>
<div>
    <div id="slider" class="mui-slider">
        <div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
            <div class="mui-scroll">
                <a :class="['mui-control-item',item.id == 0? 'mui-active' : '']" v-for="item in cates" 
                :key="item.id" @tap="getPhotoListByCateId(item.id)">
                    {{item.title}}
                </a>
            </div>
        </div>
    </div>
    <!-- 图片列表区域 -->
    <ul class="photolist">
        <router-link v-for="item in list" :key="item.id" tag="li" :to="'/home/photoinfo/'+item.id">
            <img v-lazy="item.img_url">
            <div class="info">
                <h1 class="info-title">{{item.title}}</h1>
                <div class="info-body">{{item.zhaiyao}}</div>
            </div>
        </router-link>
    </ul>
</div>
</template>

<script>
import mui from '../../lib/mui/js/mui.min.js'
export default{
    data(){
        return {
            cates:[],
            list:[],
        };
    },
    created(){
        this.getAllCategory();
        this.getPhotoListByCateId(0);
    },
    mounted(){
        mui('.mui-scroll-wrapper').scroll({
	    deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
        });
    },
    methods:{
        getAllCategory(){
            this.$http.get('api/getimgcategory').then(result => {
                if(result.body.status === 0){
                    //手动添加一个全部的分类，因为服务端并没有设置
                    result.body.message.unshift({title:"全部",id:0});
                    this.cates = result.body.message;
                }
            })
        },
        getPhotoListByCateId(cateId){
            this.$http.get('api/getimages/'+cateId).then(result =>{
                if(result.body.status === 0){
                    this.list = result.body.message;
                }
            })
        }
    }
};
</script>

<style lang="scss" scoped>
* {
    touch-action: pan-y;
}
.photolist{
    list-style: none;
    margin: 0;
    padding: 10px;
    padding-bottom: 0;
    li{
        background-color: #ccc;
        text-align: center;
        margin-bottom: 10px;
        box-shadow: 0 0 8px #999;
        position: relative;
        img{
            width: 100%;
            vertical-align: middle;
        }
       img[lazy=loading] {
        width: 40px;
        height: 300px;
        margin: auto;
        }
        .info{
            color: pink;
            text-align: left;
            position: absolute;
            bottom: 0;
            background-color: rgba(0,0,0,0.3);
            max-height: 86px;
            .info-title{font-size: 15px;}
            .info-body{font-size: 13px;}
        }
    }
}
</style>
